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Investigation of cohesionless soils in a triaxial apparatus with an optical strain measurement system

  • Construction Properties Of Soils
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Soil Mechanics and Foundation Engineering Aims and scope

Conclusions

1. The improved triaxial apparatus with an optical strain measurement system can be recommended for practical use when determining the characteristics of soils with Lode parameter µσ=±1.

2. In the pressure range of interest for deep supports the relations which permit taking into account the nonlinearity of the characteristics of cohesionless soils (3, 4) do not agree satisfactorily with the experimental data and require refinement with consideration of ω=f(σav).

3. The mechanical characteristics of cohesionless soils depend considerably on the strength of their grains at contacts and angularity. The shear strength of calcareous sands was higher than that of quartz sands at lower values of the deformation characteristics and with a feebly expressed phenomenon of dilatancy. The phenomenon of dilatancy in quartz sands is of considerable significance.

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Literature cited

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Authors
  1. V. S. Khristoforov
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  2. V. N. Karaganov
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Additional information

Leningrad Higher Military Construction Engineering School (LVVISU). Translated from Osnovaniya, Fundamenty i Mekhanika Gruntov, No. 3, pp. 13–16, May–June, 1979.

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Khristoforov, V.S., Karaganov, V.N. Investigation of cohesionless soils in a triaxial apparatus with an optical strain measurement system. Soil Mech Found Eng 16, 135–140 (1979). https://doi.org/10.1007/BF01710455

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  • DOI: https://doi.org/10.1007/BF01710455

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